React Native NetInfo是一个API,它可以让你检查设备的网络状态,比如网络是否可用,是否是频繁变换网络,以及当前网络的类型等。
以下是一些使用React Native NetInfo的方法:
- 检查网络状态
import { NetInfo } from "react-native";
NetInfo.fetch().then(state => {
console.log("Connection type", state.type);
console.log("Is connected?", state.isConnected);
});
- 监听网络状态变化
import { NetInfo } from "react-native";
const unsubscribe = NetInfo.addEventListener(state => {
console.log("Connection type", state.type);
console.log("Is connected?", state.isConnected);
});
// 用于停止监听
unsubscribe();
- 检查网络类型
import { NetInfo } from "react-native";
NetInfo.fetch().then(state => {
switch (state.type) {
case "none":
console.log("No network connection available.");
break;
case "wifi":
console.log("Connected to WiFi network.");
break;
case "cellular":
console.log("Connected to cellular network.");
break;
case "unknown":
console.log("Network connection is unknown.");
break;
}
});
以上就是一些使用React Native NetInfo的基本方法,具体使用哪种方法,可以根据你的实际需求来决定。